reiset



(No Moaemf i P. REISET 8v' G A. WEBER.

METAL GANS. 4 PadzutedApr.4 25., 1893."

. CONSTRUCTION OP SHEET No. 496,209,

. New York, and GUSTA thereofexeeeenee beiingfthaefto rheerznvings# y 5 Aiieetn .zqinginto suelngeuewlnsenndmre being ep- .K expense hitherto-incident to the production i tion to dispense with the use of keys and enl3,5 ating in' a manner dilerent from any device l 4o a sheet metal can ot' cylindrical forni, show- 'pliedfs'iniy.newbiinipdseeftlmt it is a' matter of importance to enable manufactur- "ersto pnt them upon the market-ratas Smell a. first cost as possible. One ofathe`A 'sources of osuch vessels has been the necessity of fnrnishng with each vessel sold one ofthe' instruments-generally termed keys -whici1 are used to tearl out the opening stri ps, and it 3o is a part ofthe design of our present invenable the can or other receptacle to be easily opened by the employment simply of a tongue of a'speeial construction and operhci'etofore introduced for this purpose.

To enable others to make and use our improvement, we will proceed to (lexrrribe it.

In the drawings, Figure l is a top View of ing our invention applied to one oi. its ende or heads; and Fiff. represents a similar end or head after the operation of tearing out the strip-section to open the can' has been eommenced.

A, Fig. 1, denotes the body of a cylindrical Sheet metal can of the usual construction, and 15 B are the ends or heads thereof.V ln one ot' these heads, as at l5, We place a suitable stri p- 5o system, employin;Y by preference that delto thelstriyj-sectinbhater 9, d i ff.' if: 'Serial No.' 428,507. '(No model.)

close to thefincision. it wili be see that the party" when inne secured in place co istitutes in a. ecrta-in sense a prolongation of the seetion and therefore becomes a :substitute for the customary thin flexible tongue employedl 8o in receptacles o the character here represented. .l3nt it also performs a function lof which the ordinary tongue is incapable, inasmuch as its rigidity and its combination with the strip-section at the incision pointe enables it, upon being tirnily grasped at its free l extremity by the hand or with pliers or in` any other effective manner, to operate as a' lever Working upon the fulcrum furnished byl that portion of the strip-section to which its 9o fastened ond attached. Consequently, as soon as force is exerted upon its free extremy ity it quickly pries oit that part of the stripsection and causes it te break through at c and. thus Starte the stripping operation fully ns effectue-ily as can be done by the ordinary key applied to a. thin end yieiding tongue of the nenni construction. it thus comprises 'a tongne and a hey in one instrument and performe cii'oienly ine functionof each. Moref Loo over it removes the danger of tearing the scribed Vin lietterslatont No. 401,918, granted tongue oit' betere the strip-section has been sion cshould be used in all cases.

;started, as frequentlyhappens when the flexible tongue is used-if the soldering which keeps the latter in place has not been properly done.

It will thus be seen that we'dispense entirely with a separate key or any equivalent there- .:(or, and yet provide aninstrument which sat` fisfaetorily answers all`the purposes of such a 'Ikeyj without -the additional manufacturing veost which the employment of separate keys makes necessary. y y

"It is not essential that the transverse inci- In its place,

' la sufficiently sharplbead may be provided extending across the strip-section in the same manner as the'incision. 0r, the metal of the strip-section around or near to the point where the key is secured to it may be weakened or made .brittle in any suitable way so that it ycan A be readily torn through by the initial action of the key. It is also -not always necessary that when an incision is employed at c, it should be made only partly through the stripseetion. In cans or -vessels designed for hold- I ing paints, whitelead, bakingpowder, tobaceo, and many other articles which do not require to be kept absolutely airtight, it will answer all purposes if the incision is cut entirely through the metal.

In the process of manufacture it is sometimes easier tov make the incision extend entirely through the metal, even in vessels which are intended .to be air-tight, for the reason that the cutters dc n ot then require so nice an adjustment as when they are to-cut only partly thronglrthe sheet material. But it is to be understood that if this course. be adopted, the eut-through incision must afterward be touched lightly with solder on. one or otherof the sides of the strip-section so as to close it and prevent the entrance of 'air on that side. It is also 'properjt'o state that when the contents of the vesselrequire -to be preserved from the ai-r, it will generally-be found best to solder lightly all around the point of attachment of the lever f tothe strip-section.

' The mode of construction here represented is applicable to the tops of vglass jars for eon -I ably weakened more or less transversely of its length, in combination with a rigid lever tongue firmly attached to the strip-section at or close to the weakened point of the latter and so constructed and operating as to con- .stitute a lever to start and complete the tearing out of the strip-section and thereby dispense with a key, substantially as set forth.

, FREDERIC REISE'R GUSTAVUS A. WAEBER.

lllitxiesses:

F. J. l-IeLEv. 

